The Big Picture is a photo blog by Alan Taylor, hosted by the newspaper boston.com. The basic idea is the following: Provide a short summary of a current story, and tell it with anywhere between 15 and 45 photos, each with a short description and the source.
Photos are 990px × 667px, which supposedly is too small for prints, but big compared to any other news site. Also photos are just loaded all at once on a single page; you can start looking at the first few while the rest is loading.
The photos themselves aren’t amateur photos taken from Flickr or elsewhere, instead professional photos from various agencies.
A good introduction is the three-part series The Year 2008 in photographs (part 2, part 3).
For anyone interested in some background information, this interview with Alan Taylor is worth a read.
Whoaaa!, Simple Amazing!!!
What a nice picture.